A hot setting tool for a superalloy casting

Abstract

The utility model relates to foundry technology field especially relates to a kind of hot setting tool of high-temperature alloy casting, including upper module and lower module, and the compacting block is integrally formed on the bottom surface of upper module, and positioning slot is opened on the bottom surface of compacting block, and positioning slot is used to accommodate the main plate body on high-temperature alloy casting;The bottom surface of compacting block is provided with two inclined compacting surfaces, and two compacting surfaces are located at the two sides of positioning slot, and compacting surface is used to compact on the top surface of the wing plate of high-temperature alloy casting;Two supporting tables are provided on the top surface of lower module, supporting strip and supporting inclined surface are provided on the top surface of supporting table;Two supporting tables are spaced apart and form a give way slot;Supporting strip is used to support on the bottom surface of main plate body, supporting inclined surface is used to support on the bottom surface of wing plate, and give way slot is used to accommodate the rib plate of high-temperature alloy casting.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, and in particular to a heat setting tooling for high-temperature alloy castings. Background Technology

[0002] Combination Figure 1 The figure shows a cross-sectional schematic diagram of a high-temperature alloy casting 100. The high-temperature alloy casting 100 includes a main body 101, ribs 102, and flanges 103. Two ribs 102 are integrally formed on the bottom surface of the main body 101, and are arranged parallel and spaced apart. Two flanges 103 are integrally formed on both sides of the main body 101, and are inclined.

[0003] The aforementioned high-temperature alloy casting 100 is produced using a vacuum induction furnace gravity casting process. However, such castings often contain large areas of thin-walled flanges 103. During the cooling process after casting, the uneven free shrinkage of the material easily leads to deformation of the casting, making it unable to meet the dimensional accuracy requirements of the design drawings.

[0004] While traditional cold straightening can correct deformation, it has significant drawbacks: high-temperature alloys typically possess high strength and hardness at room temperature but poor plasticity. Forcibly applying external force for straightening can easily induce cracks in thin-walled areas or stress concentration points of the casting, potentially leading to breakage and scrapping. This results in low yield rates and safety hazards.

[0005] Therefore, the aforementioned high-temperature alloy casting 100 needs to be heat-set. However, there is currently no heat-setting fixture for the aforementioned high-temperature alloy casting 100. Utility Model Content

[0006] The main purpose of this invention is to provide a heat-setting tooling for high-temperature alloy castings, which aims to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, this utility model proposes a heat-setting fixture for high-temperature alloy castings, comprising: The upper module has a clamping block integrally formed on its bottom surface. A positioning groove is formed on the bottom surface of the clamping block. The positioning groove is used to accommodate the main body on the high-temperature alloy casting. The bottom surface of the clamping block is provided with two inclined clamping surfaces, and the two clamping surfaces are located on both sides of the positioning groove. The clamping surfaces are used to press against the top surface of the wing plate of the high-temperature alloy casting. The lower module has two support platforms on its top surface, and support bars and support ramps are provided on the top surface of the support platforms. The two support platforms are spaced apart and form a relief groove. The support bars are used to support the bottom surface of the main body, the support ramps are used to support the bottom surface of the wing plate, and the relief grooves are used to accommodate the ribs of the high-temperature alloy casting.

[0008] Preferably, a first ear plate is integrally formed at both ends of the upper module, and a first hand buckle groove is provided on the bottom surface of the first ear plate.

[0009] Preferably, a second ear plate is integrally formed at both ends of the lower module, and a second hand buckle groove is provided on the bottom surface of the second ear plate.

[0010] Preferably, the distance from the bottom surface of the relief groove to the top surface of the support strip is H; the height of the rib plate of the high-temperature alloy casting is d; satisfying: H≥1.5d.

[0011] Preferably, there is a gap t between the sidewall of the relief groove and the rib plate, which satisfies: t≥5mm.

[0012] Preferably, a wear-resistant coating is provided on the surface of the positioning groove and the pressing surface.

[0013] Preferably, a wear-resistant coating is provided on the top surface of the support bar and the surface of the support slope.

[0014] Preferably, the wear-resistant coating is an alumina coating or a zirconium oxide coating, and the coating thickness is 0.08 mm to 0.12 mm.

[0015] Preferably, the heat-setting fixture further includes a counterweight, which is used to place on the top surface of the upper module.

[0016] Preferably, the counterweight has different weight specifications, namely 2kg, 3kg, 4kg or 5kg.

[0017] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: (1) By designing dedicated upper and lower modules, the support bars and support ramps on the lower module form effective support for the high-temperature alloy casting to be calibrated, and the clearance groove provides clearance for the ribs on the high-temperature alloy casting. When the mold is closed, the positioning groove on the upper module positions the main body on the high-temperature alloy casting, and the clamping surface on the upper module is used to press against the top surface of the wing plate of the high-temperature alloy casting. During hot calibration, the heat setting fixture is placed together with the high-temperature alloy casting in a vacuum heat treatment furnace, and the pressure is applied to the high-temperature alloy casting by the weight of the upper module, so that the deformation position of the casting can be corrected to a qualified state.

[0018] (2) The tooling structure is simple and easy to operate, and it is suitable for the straightening treatment of castings in mass production. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a cross-section of a high-temperature alloy casting; Figure 2 A three-dimensional structural diagram of the heat-setting tooling provided by this utility model; Figure 3 This is a structural diagram of the following module; Figure 4 This is a structural diagram of the above module; Figure 5 This is a cross-sectional view of the heat-setting tooling provided by this utility model during mold closing.

[0021] Explanation of reference numerals: 1. Upper module; 1a. Clamping block; 1b. Positioning groove; 1c. Clamping surface; 1d. First ear plate; 1e. First hand-clip groove; 2. Lower module; 2a. Support platform; 2b. Support bar; 2c. Support slope; 2d. Relief groove; 2e. Second ear plate; 2f. Second hand-clip groove; 3. Counterweight block; 100. High-temperature alloy casting; 101. Main body; 102. Rib plate; 103. Wing plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0025] Combination Figures 2 to 5 As shown, this embodiment provides a heat-setting fixture for high-temperature alloy castings. The fixture mainly consists of an upper module 1, a lower half-mold 2, and a counterweight 3, all three being made of heat-resistant steel to ensure structural stability in high-temperature environments. Through the cooperation of the upper module 1 and the lower half-mold 2, precise positioning, stable support, and effective pressure are achieved for the high-temperature alloy casting 100. A detailed description of the heat-setting fixture is as follows: (a) Structure of Module 1 A clamping block 1a is integrally formed on the bottom surface of the upper module 1. A positioning groove 1b is formed on the bottom surface of the clamping block 1a, which is used to accommodate the main body 101 on the high-temperature alloy casting 100. The bottom surface of the clamping block 1a is provided with two inclined clamping surfaces 1c, which are located on both sides of the positioning groove 1b. The clamping surfaces 1c are used to press against the top surface of the wing plate 103 of the high-temperature alloy casting 100. The surface roughness Ra of the positioning groove 1b and the clamping surfaces 1c is ≤1.6μm to reduce frictional damage with the surface of the casting, while ensuring a tight fit and avoiding uneven local stress on the casting under high temperature.

[0026] The width and depth of the positioning groove 1b are adapted to the width and thickness of the main body 101 of the high-temperature alloy casting 100, respectively, to ensure that the main body 101 can be fully embedded in the positioning groove 1b and achieve precise positioning.

[0027] First ear plates 1d are integrally formed at both ends of the upper module 1, and first hand-holding grooves 1e are provided on the bottom surface of the first ear plates 1d. The purpose of providing the first ear plates 1d and the first hand-holding grooves 1e is to facilitate the operator's handling of the upper module 1. During handling, the operator can hold the first ear plates 1d with both hands, and the bent fingers can be inserted into the first hand-holding grooves 1e, thereby allowing the operator to handle the upper module 1. The cross-section of the first hand-holding groove 1e can be designed as an inverted U-shape, and the width of the first hand-holding groove 1e is 20mm~30mm. The edges at the location of the first hand-holding groove 1e are rounded with a radius of 2mm~5mm to avoid scratching the operator during handling.

[0028] In addition, to further enhance the wear resistance of the upper module 1 and extend its service life, a wear-resistant coating is provided on the groove surface of the positioning groove 1b and the surface of the pressing surface 1c. The wear-resistant coating is made of alumina or zirconium oxide, and the coating thickness is controlled between 0.08mm and 0.12mm. This coating can not only effectively reduce the friction and wear between the casting and the positioning groove 1b and the pressing surface 1c, but also reduce the surface oxidation rate of the groove surface of the positioning groove 1b and the pressing surface 1c under high temperature environment.

[0029] (II) Structure of Module 2 Two support platforms 2a are provided on the top surface of the lower module 2. Support bars 2b and support ramps 2c are provided on the top surface of the support platforms 2a. The two support platforms 2a are spaced apart and form relief grooves 2d. The support bars 2b are used to support the bottom surface of the main body 101 of the high-temperature alloy casting 100. The support ramps 2c are used to support the bottom surface of the wing plate 103 of the high-temperature alloy casting 100. The relief grooves 2d are used to accommodate the ribs 102 of the high-temperature alloy casting 100.

[0030] The surface roughness Ra of the top surface of the support bar 2b and the support inclined surface 2c is ≤1.6μm to reduce frictional damage to the surface of the casting, while ensuring a tight fit and avoiding uneven local stress on the casting under high temperature.

[0031] Second ear plates 2e are integrally formed at both ends of the lower module 2, and second hand-holding grooves 2f are provided on the bottom surface of the second ear plates 2e. The purpose of providing the second ear plates 2e and the second hand-holding grooves 2f is to facilitate the operator's handling of the lower module 2. During handling, the operator can hold the second ear plates 2e with both hands, and the bent fingers can be inserted into the second hand-holding grooves 2f, thereby allowing the lower module 2 to be moved. The cross-section of the second hand-holding grooves 2f can be designed as an inverted U-shape, and the width of the second hand-holding grooves 2f is 20mm~30mm. The edges at the location of the second hand-holding grooves 2f are rounded with a radius of 2mm~5mm to avoid scratching the operator during handling.

[0032] Combination Figure 5 As shown, the distance from the bottom surface of the relief groove 2d to the top surface of the support strip 2b is H; the height of the rib plate 102 of the high-temperature alloy casting 100 is d; satisfying: H≥1.5d. Furthermore, there is a gap t between the sidewall of the relief groove 2d and the rib plate 102, satisfying: t≥5mm. Through the above dimensional design, interference between the relief groove 2d and the rib plate 102 can be effectively avoided.

[0033] Furthermore, to further enhance the wear resistance of the lower module 2 and extend its service life, a wear-resistant coating is provided on the top surface of the support bar 2b and the surface of the support slope 2c. The wear-resistant coating is an alumina coating or a zirconium oxide coating, with a thickness of 0.08 mm to 0.12 mm. This coating effectively reduces frictional wear between the casting and the support bar 2b and the support slope 2c.

[0034] (III) Structure of counterweight 3 The heat-setting fixture also includes a counterweight 3, which is placed on the top surface of the upper module 1. The counterweight 3 is a cuboid block and has different weight specifications, namely 2kg, 3kg, 4kg or 5kg.

[0035] (iv) The coordination relationship between upper and lower modules When the upper module 1 and the lower module 2 are closed, the following mating requirements must be met: Positional correspondence: The pressing surface 1c of the upper module 1 corresponds vertically to the supporting inclined surface 2c of the lower module 2, ensuring that when the wing plate 103 of the high-temperature alloy casting 100 is clamped between the pressing surface 1c and the supporting inclined surface 2c, the wing plate 103 is uniformly supported by the supporting inclined surface 2c and uniformly pressed by the pressing surface 1c; The positioning groove 1b of the upper module 1 corresponds vertically to the supporting bar 2b of the lower module 2, ensuring that the main body 101 of the high-temperature alloy casting 100 can be inserted into the positioning groove 1b, and the supporting bar 2b can be supported on the lower surface of the main body 101, thereby achieving the support and limiting of the main body 101.

[0036] Weight design: The weight of the upper module 1 needs to be designed according to the size and deformation degree of the high-temperature alloy casting 100 to ensure that the weight of the upper module 1 itself can provide sufficient straightening pressure for the casting; if the casting is deformed, a counterweight 3 can be placed on the top of the upper module 1 to increase the pressure and improve the straightening effect.

[0037] (v) Selection of tooling materials The upper module 1 and lower module 2 are made of heat-resistant steel, specifically 310S heat-resistant steel. 310S heat-resistant steel has a maximum service temperature of up to 1200℃ and excellent high-temperature oxidation resistance and creep resistance. It can maintain structural stability for a long time under heat treatment temperatures of 1150℃~1170℃, making it suitable for scenarios with higher requirements for tooling life.

[0038] (vi) How to use the tooling Step S1: Place the high-temperature alloy casting 100 that needs to be corrected on the lower module 3, support it on the lower surface of the main body 101 using the support bar 2b, support it on the lower surface of the wing plate 103 using the support slope 2c, and accommodate the rib plate 102 using the relief groove 2d.

[0039] Step S2: Place the upper module 1 onto the high-temperature alloy casting 100, and use the positioning groove 1b to lock it onto the main body 101 of the high-temperature alloy casting 100, and use the pressing surface 1c to press it onto the top surface of the wing plate 103.

[0040] Step S3: After the mold is closed, the heat-setting fixture, together with the high-temperature alloy casting 100 that needs to be corrected, is placed into the vacuum heat treatment furnace for correction. Under the action of high temperature of 1150℃~1170℃, the softened high-temperature alloy casting 100 is fixed in the fixture by the pressure of the upper module 1, so as to achieve the purpose of correction.

[0041] In addition, in step S2, based on the deformation of the high-temperature alloy casting 100, a counterweight 3 of appropriate weight can be placed on the top surface of the upper module 1. At this time, the pressure applied to the high-temperature alloy casting 100 is the sum of the weight of the upper module 1 itself and the weight of the counterweight 3.

[0042] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A heat-setting tooling for high-temperature alloy castings, characterized in that, include: The upper module (1) has a clamping block (1a) integrally formed on its bottom surface. A positioning groove (1b) is provided on the bottom surface of the clamping block (1a). The positioning groove (1b) is used to accommodate the main body (101) on the high-temperature alloy casting (100). The bottom surface of the clamping block (1a) is provided with two inclined clamping surfaces (1c), and the two clamping surfaces (1c) are located on both sides of the positioning groove (1b). The clamping surfaces (1c) are used to press against the top surface of the wing plate (103) of the high-temperature alloy casting (100). The lower module (2) has two support platforms (2a) on its top surface. Support bars (2b) and support ramps (2c) are provided on the top surface of the support platforms (2a). The two support platforms (2a) are spaced apart and form a relief groove (2d). The support bars (2b) are used to support the bottom surface of the main body (101), the support ramps (2c) are used to support the bottom surface of the wing plate (103), and the relief grooves (2d) are used to accommodate the ribs (102) of the high-temperature alloy casting (100).

2. The heat-setting fixture according to claim 1, characterized in that, The upper module (1) has a first ear plate (1d) integrally formed at both ends, and a first hand buckle groove (1e) is provided on the bottom surface of the first ear plate (1d).

3. The heat-setting fixture according to claim 1, characterized in that, The lower module (2) has a second ear plate (2e) integrally formed at both ends, and a second hand buckle groove (2f) is provided on the bottom surface of the second ear plate (2e).

4. The heat-setting fixture according to claim 1, characterized in that, The distance from the bottom surface of the relief groove (2d) to the top surface of the support bar (2b) is H; the height of the rib plate (102) of the high-temperature alloy casting (100) is d; satisfying: H≥1.5d.

5. The heat-setting fixture according to claim 1, characterized in that, There is a gap t between the sidewall of the relief groove (2d) and the rib plate (102), which satisfies: t≥5mm.

6. The heat-setting fixture according to claim 1, characterized in that, A wear-resistant coating is provided on the groove surface of the positioning groove (1b) and the surface of the pressing surface (1c).

7. The heat-setting fixture according to claim 1, characterized in that, A wear-resistant coating is provided on the top surface of the support bar (2b) and the surface of the support inclined surface (2c).

8. The heat-setting fixture according to claim 6 or 7, characterized in that, The wear-resistant coating is an alumina coating or a zirconium oxide coating, with a coating thickness of 0.08 mm to 0.12 mm.

9. The heat-setting fixture according to claim 1, characterized in that, It also includes a counterweight (3) for placing on the top surface of the upper module (1).

10. The heat-setting fixture according to claim 9, characterized in that, The counterweight (3) has different weight specifications, namely 2kg, 3kg, 4kg or 5kg.

Images